Want to Become a Self-Made Millionaire? Do This for 30 Minutes Every Day

While exercise may not directly cause success, where self-made millionaires are concerned, the two are definitely linked.

Entrepreneurs start their own businesses or side hustles--which you can do in just a few hours--for a variety of reasons. Some want to be their own boss. Others want to make their living by doing something they love. Others seek the opportunity to make a bigger difference in the lives of others.

If you feel stuck in your career or your business, if you have big dreams but don't feel like you're making any progress, adopt the exercise habit countless successful entrepreneurs--and many self-made millionaires--embrace.

And self-made billionaires. Richard Branson says working out boosts his productivity. "I can achieve twice as much in a day by keeping fit," he says.

So if you want to get rich--and even if you don't--make exercise a part of your daily routine.